Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec299bb177981474…

MALICIOUS

PDF

44.8 KB Created: 2021-05-21 00:11:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2432ec35f6daf6c004f6f89ab8f8de96 SHA-1: e7f7a0e46b696c9aad873e34147b7095afbbd035 SHA-256: ec299bb177981474383db5f7cfaf0b53006c86d7d7b06196c3b08dde91572c0f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users with promises of free in-game items, such as 'Free Clothing On Roblox' and 'Roblox Generator'. These links redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7481

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/free-clothing-on-roblox-game-hack In PDF document text
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3524 25944 bytes
SHA-256: 53164eac83e38af308987ef6be7e9a63d297fd921384f72b20ff3f16f7c53299
font_01_sfnt_off000070c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C4 8704 bytes
SHA-256: ddfd86c88a6b8304bc31eeb9f28c8110fac325cdacc87503bacf4ac741777490
font_02_sfnt_off00008d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2E 18624 bytes
SHA-256: c8648e0e7fa589189c517af6ddfacdde337cbe9d54a122799786c2e236ce5a9b

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